Valves Repair

Repair and overhaul recommendations have been developed for Woodward valves, actuators, mechanical controls and auxiliary products utilizing reliability and operational data collected from field performance.

A detailed analysis has compared repair records of returned units, field data and design criteria to determine the following recommendations. An overhaul of the component should be completed on or before the unit reaches the recommended range of “Operating Hours” not to exceed 6 years in service. Recommendations are appropriately aligned with the standard OEM turbine maintenance schedules which are based on “normal” operating conditions, environment, fuel quality, and past maintenance history. Installations that do not meet “normal” operating conditions may require customized maintenance cycles to maximize reliability, performance and asset life. Contact us for a detailed evaluation of your site conditions to determine the right maintenance cycles for your installation.

Product Name

Maintenance
Recommendation

Operating Hours*

Years in Service

AERO DERIVATIVE:

Hydraulic Control Unit

50,000 Hours

6 years

Variable Geometry Hydromechanical
Control

50,000 Hours

6 years

Variable Geometry
Electromechanical Control

50,000 Hours

6 years

Variable Stator Vane Actuators

50,000 Hours

6 years

1907 Small Liquid Valves

25,000 Hours

3 years

1907 Large Liquid Valves

50,000 Hours

6 years

Liquid Shutoff Valves

50,000 Hours

6 years

LQ25 & LQ25T Liquid Metering
Valves

50,000 Hours

6 years

1907 Small Gas Valves

25,000 Hours

3 years

3103/3171 Gas Valve with Hydraulic
Actuator

50,000 Hours

6 years

3103/3171 Gas Valve with Electric
Actuator

50,000 Hours

6 years

Gas Shutoff Valve

50,000 Hours

6 years

GS3/GS10 Gas Metering Valve

25,000 Hours

6 years

GS6/GS16 Gas Metering Valve

50,000 Hours

6 years

3151 Water Metering Valve

50,000 Hours**

6 years**

CIT/CDP Sensor

50,000 Hours

6 years

2057 Pump

50,000 Hours

6 years

Electric Gas Metering Valve (EGMV)
on LMS100

50,000 Hours***

6 years***

Electric Water Metering Valve
(EWMV) on LMS100

50,000 Hours***

6 years***

Electric Liquid Metering Valve
(EMLV) on LMS100

50,000 Hours***

6 years***

Variable Bleed Vane (VBV) on
LMS100

50,000 Hours

6 Years

HEAVY FRAME:

Globe Gas Fuel Control Valve (Hydraulic
and Electric Actuated)

50,000 Hours***

6 years***

SonicFlo Gas Fuel Control Valve
(Hydraulic and Electric Actuated)

50,000 Hours***

6 years***

Rotary Fuel Control Valve
(Hydraulic, Electric, Pneumatic Actuated)

50,000 Hours***

6 years***

3-Way Liquid Fuel Control Valve
(Hydraulic Actuated)

50,000 Hours

6 years

2 - Way Liquid FuelValve (Hydraulic and Electric Actuated)

50,000 Hours***

6 years***

2 – Way Water Metering Valve
(Hydraulic and Electric Actuated)

50,000 Hours***

6 years***

Inlet Guide Vane (IGV)Actuator

50,000 Hours

6 years

Variable Guide Vane (VGV)

50,000 Hours

6 years

*Woodward considers its valves and actuators as key components in the overall fuel efficiency, emissions control and safety of the gas turbine. Therefore, we recommend that our products be overhauled at the same regular intervals that the gas turbine “Hot Section” or “Major Inspections” occur. Please consult the Gas Turbine OEM guidelines for recommended service intervals for your turbine.